def database_feild_varchar_trans(in_feild):  '''  transfer the feild if varchar then 3times lang else no transfer  '''  feild_split = in_feild.split(' ')  is_varchar = feild_split[1].find('VARCHAR')  if is_varchar >= 0 :    num_varchar = feild_split[1].replace('VARCHAR','').replace('(','').replace(')','')     print (num_varchar)    3_num_varchar = num_varchar*3    feild_split[1] = feild_split[1].replace(str(num_varchar),str(3_num_varchar))    return feild_split  else:    print ('The feild type is not varchar')    return feild_split

>>> runfile('E:/procedure/python/projects/others/table_test.py', wdir='E:/procedure/python/projects/others')Traceback (most recent call last): File "<stdin>", line 1, in <module> File "D:/Python33/lib/site-packages/spyderlib/widgets/externalshell/sitecustomize.py", line 699, in runfile  execfile(filename, namespace) File "D:/Python33/lib/site-packages/spyderlib/widgets/externalshell/sitecustomize.py", line 88, in execfile  exec(compile(open(filename, 'rb').read(), filename, 'exec'), namespace) File "E:/procedure/python/projects/others/table_test.py", line 20  3_num_varchar = int(num_varchar)*3        ^SyntaxError: invalid syntax將變量3_num_varchar改為num_varchar_3，運(yùn)行成功，程序改為如下：import osimport sysstr1='aaa varchar(10)'def database_feild_varchar_trans(in_feild):  '''  transfer the feild if varchar then 3times lang else no transfer  '''  feild_split = in_feild.split(' ')  is_varchar = feild_split[1].find('VARCHAR')  if is_varchar >= 0 :    num_varchar = feild_split[1].replace('VARCHAR','').replace('(','').replace(')','')     print (num_varchar)    num_varchar_3 = num_varchar*3    feild_split[1] = feild_split[1].replace(str(num_varchar),str(num_varchar_3))    return feild_split  else:    print ('The feild type is not varchar')    return feild_splitprint (database_feild_varchar_trans(str1))

>>> runfile('E:/procedure/python/projects/others/table_test.py', wdir='E:/procedure/python/projects/others')The feild type is not varchar['aaa', 'varchar(10)']